Synthesis and complexation properties of novel triazoyl-based ferrocenyl ligands

Evidence of electrochemical transduction of cation recognition by TEMPO derivatives

“…Numerous studies deal with the binding between crown ethers and cations in solution. [1][2][3] Increasing attention has been dedicated to redox active binding derivatives, [4][5][6] especially when binding induces a modification of the electronic properties of the redox probe. The electrochemical transduction of cation binding has been studied with reductive groups (nitrobenzene, 7 anthraquinone, 8 p-phenylenediamine 9 ) and oxidative groups (tetrathiafulvalene, 10 ferrocene 11,12 ).…”

Synthesis of novel ferrocene containing vic-dioxime ligands and their Ni(II), Cu(II) and Co(II) complexes: Spectral, electrochemical and biological activity studies

“…In all complexes, the first ferrocenyl-centered oxidations are shifted anodically by 0.010e0.107 V and 0.040e0.099 V when compared to the parent ligands. The positive shifts indicate that the ferrocene center is harder to oxidise upon complexation, as a result of the effect of the positively charged metal centers [38]. The cyclic voltammogram of 1a in the potential range of 1 to À2.5 V with a scan rate of 100 mVs À1 showed the ferrocene couple at 0.39 V along with an irreversible peak at À2.10 V that could be ascribed to oxime-centered reductions (Fig.…”

Towards Dual‐Functionality Spin‐Crossover Complexes

“…An added attraction of adpt is that it contains an amino group that, although relatively unreactive owing to delocalisation of the lone pair of electrons of the nitrogen atom into the triazole ring, is available for further reactions with an acid chloride to give an amide, or an aldehyde to give an imine . A handful of iron(II) complexes of these further derivatised adpt ‐based ligands are known, and are SCO active, with T 1/2 values ranging from 75 to 182 K .…”

“…A handful of iron(II) complexes of these further derivatised adpt ‐based ligands are known, and are SCO active, with T 1/2 values ranging from 75 to 182 K . Several complexes of other metal ions have also been reported . Of the iron(II) complexes of the functionalised adpt derivatives, Liu and co‐workers reported [Fe( L ) 2 (NCE) 2 ] (E=S or Se, L =(naphth‐1‐yl)‐ N ‐[3,5‐di(pyridin‐2‐yl)‐4 H ‐1,2,4‐triazol‐4‐yl]methanimine), in which the Schiff base ligand L is prepared through the condensation of adpt with 1‐naphthaldehyde, to add emissive properties .…”